Augustine of Hippo
Catena Aurea · Matthäusevangelium 22
But when the Pharisees had heard that he had put the Sadducees to silence, they were gathered together. Then one of them, which was a Lawyer, asked him a question, tempting him, and saying, Master, which is the great commandment in the Law? Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. On these two commandments hang all the Law and the Prophets.
(de Cons. Ev. ii. 73.) Let no one find a difficulty in this, that Matthew speaks of this man as putting his question to tempt the Lord, whereas Mark does not mention this, but concludes with what the Lord said to him upon his answering wisely, Thou art not far from the kingdom of God. (Mark 12:34.) For it is possible that, though he came to tempt, yet the Lord’s answer may have wrought correction within him. Or, the tempting here meant need not be that of one designing to deceive an enemy, but rather the cautious approach of one making proof of a stranger. And that is not written in vain, Whoso believeth lightly, he is of a vain heart. (Ecclus. 19:4.)